aw: Add and use DrawGL kModeSync

android_webview/public/browser/draw_gl.h

Index: android_webview/public/browser/draw_gl.h
diff --git a/android_webview/public/browser/draw_gl.h b/android_webview/public/browser/draw_gl.h
index 6409598b2a9e53e9cd56c9986e27a567a8f4604d..4a43523593ac151fd2c67e580dbdfd37be52cb14 100644
--- a/android_webview/public/browser/draw_gl.h
+++ b/android_webview/public/browser/draw_gl.h
@@ -9,11 +9,15 @@
 extern "C" {
 #endif
 
+static const int kAwDrawGLInfoVersion = 1;
+
 // Holds the information required to trigger an OpenGL drawing operation.
 struct AwDrawGLInfo {
+  int version;  // The AwDrawGLInfo this struct was built with.

[hush (inactive), 2014/07/25 18:08:07]

where is the version set? I think you need to do that in frameworks/webview?

[boliu, 2014/07/25 18:11:02]

Yes

+
   // Input: tells the draw function what action to perform.
   enum Mode {
-    kModeDraw,
+    kModeDraw = 0,
     kModeProcess,
     kModeProcessNoContext,
     kModeSync,