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Create a ChromeBrowserHostImpl for every Chrome tab (see issue #2969)

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The Browser object represents the top-level Chrome browser window. One or more
tabs (WebContents) are then owned by the Browser object via TabStripModel. A
new Browser object can be created programmatically using "new Browser" or
Browser::Create, or as a result of user action such as dragging a tab out of an
existing window. New or existing tabs can also be added to an already existing
Browser object.

The Browser object acts as the WebContentsDelegate for all attached tabs. CEF
integration requires WebContentsDelegate callbacks and notification of tab
attach/detach. To support this integration we add a cef::BrowserDelegate
(ChromeBrowserDelegate) member that is created in the Browser constructor and
receives delegation for the Browser callbacks. ChromeBrowserDelegate creates a
new ChromeBrowserHostImpl when a tab is added to a Browser for the first time,
and that ChromeBrowserHostImpl continues to exist until the tab's WebContents
is destroyed. The associated WebContents object does not change, but the
Browser object will change when the tab is dragged between windows.

CEF callback logic is shared between the chrome and alloy runtimes where
possible. This shared logic has been extracted from CefBrowserHostImpl to
create new CefBrowserHostBase and CefBrowserContentsDelegate classes. The
CefBrowserHostImpl class is now only used with the alloy runtime and will be
renamed to AlloyBrowserHostImpl in a future commit.
This commit is contained in:
Marshall Greenblatt
2020-09-17 18:24:08 -04:00
parent 7ca9e9c54b
commit 38d8acfa18
52 changed files with 3138 additions and 1603 deletions
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8
include/cef_api_hash.h
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@ -42,13 +42,13 @@
// way that may cause binary incompatibility with other builds. The universal
// hash value will change if any platform is affected whereas the platform hash
// values will change only if that particular platform is affected.
#define CEF_API_HASH_UNIVERSAL "09d3d4f08869644fe3baa7a751de537f3446525b"
#define CEF_API_HASH_UNIVERSAL "c148b1a4fd1d29c2e14b1ab8ce1c04f29013de73"
#if defined(OS_WIN)
#define CEF_API_HASH_PLATFORM "3022db6736af26cc38158d38e22f74a51312a5c9"
#define CEF_API_HASH_PLATFORM "1f380ef6bde94cd7331d090b7aee0a08f2515541"
#elif defined(OS_MAC)
#define CEF_API_HASH_PLATFORM "13e2e2451c2320f0d16b35ba53b3295409888dd8"
#define CEF_API_HASH_PLATFORM "c42f0866e58d3f96183e1f8931a4d01a7900b0b4"
#elif defined(OS_LINUX)
#define CEF_API_HASH_PLATFORM "d781b815150795b0bce95d72ce967b508c9a04d5"
#define CEF_API_HASH_PLATFORM "92824ced77603246263f1f2ecf95ff4fad73885d"
#endif
#ifdef __cplusplus