gpu: Add crash key for GLContext::SetCurrent stack trace.

We know that current context is set to null when the crash happens.
Getting the stack trace for the last call to SetCurrent will be helpful.

BUG=724999

Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ie99e7c6cd0c9faa162cd0fc789c23d321256ded7
Reviewed-on: https://chromium-review.googlesource.com/780391Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Reviewed-by: Scott Graham <scottmg@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/master@{#519943}

android_webview/common/crash_reporter/crash_keys.cc

@@ -95,6 +95,9 @@ size_t RegisterWebViewCrashKeys() {
       // Temporary for https://crbug.com/685996.
       {"user-cloud-policy-manager-connect-trace", kMediumSize},
 
+      // TODO(sunnyps): Remove after fixing crbug.com/724999.
+      {"gl-context-set-current-stack-trace", kMediumSize},
+
       // Accessibility keys. Temporary for http://crbug.com/765490.
       {"ax_tree_error", kSmallSize},
       {"ax_tree_update", kMediumSize},

chrome/app/chrome_crash_reporter_client_win.cc

@@ -159,6 +159,9 @@ size_t RegisterCrashKeysHelper() {
       // Temporary for https://crbug.com/685996.
       {"user-cloud-policy-manager-connect-trace", kMediumSize},
 
+      // TODO(sunnyps): Remove after fixing crbug.com/724999.
+      {"gl-context-set-current-stack-trace", kMediumSize},
+
       // TODO(asvitkine): Remove after fixing https://crbug.com/736675
       {"bad_histogram", kMediumSize},
 

chrome/common/crash_keys.cc

@@ -197,6 +197,9 @@ size_t RegisterChromeCrashKeys() {
     // Temporary for https://crbug.com/685996.
     {kUserCloudPolicyManagerConnectTrace, kMediumSize},
 
+    // TODO(sunnyps): Remove after fixing crbug.com/724999.
+    {"gl-context-set-current-stack-trace", kMediumSize},
+
     // TODO(asvitkine): Remove after fixing https://crbug.com/736675
     {"bad_histogram", kMediumSize},
 

chromecast/crash/cast_crash_keys.cc

@@ -78,6 +78,9 @@ size_t RegisterCastCrashKeys() {
       // Temporary for https://crbug.com/685996.
       {"user-cloud-policy-manager-connect-trace", ::crash_keys::kMediumSize},
 
+      // TODO(sunnyps): Remove after fixing crbug.com/724999.
+      {"gl-context-set-current-stack-trace", ::crash_keys::kMediumSize},
+
       // Accessibility keys. Temporary for http://crbug.com/765490.
       {"ax_tree_error", ::crash_keys::kSmallSize},
       {"ax_tree_update", ::crash_keys::kMediumSize},

ui/gl/gl_context.cc

@@ -9,6 +9,8 @@
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
 #include "base/command_line.h"
+#include "base/debug/crash_logging.h"
+#include "base/debug/stack_trace.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ -251,6 +253,9 @@ void GLContext::SetCurrent(GLSurface* surface) {
   // to create and make current a context.
   if (!surface && GetGLImplementation() != kGLImplementationMockGL &&
       GetGLImplementation() != kGLImplementationStubGL) {
+    // TODO(sunnyps): Remove after fixing crbug.com/724999.
+    base::debug::SetCrashKeyToStackTrace("gl-context-set-current-stack-trace",
+                                         base::debug::StackTrace());
     SetCurrentGL(nullptr);
   }
 }