Fix crash in hardware accelerated webviews.

We are not freeing the baseTile objects when leaving a page and
are running out of memory.

bug: 3107362
Change-Id: I52539d7b94d914b9ede44715362cbde94a7c077e

2 files changed, 5 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/android/TiledPage.cpp b/WebCore/platform/graphics/android/TiledPage.cpp
index f42105e..7bdea98 100644
--- a/WebCore/platform/graphics/android/TiledPage.cpp
+++ b/WebCore/platform/graphics/android/TiledPage.cpp
@@ -59,6 +59,10 @@ TiledPage::TiledPage(int id, GLWebViewState* state)
 {
 }
 
+TiledPage::~TiledPage() {
+   deleteAllValues(m_baseTiles);
+}
+
 BaseTile* TiledPage::getBaseTile(int x, int y)
 {
     // if (x,y) is (0,0) the HashMap will treat the key as a null value and will
diff --git a/WebCore/platform/graphics/android/TiledPage.h b/WebCore/platform/graphics/android/TiledPage.h
index 917ba4b..94306bf 100644
--- a/WebCore/platform/graphics/android/TiledPage.h
+++ b/WebCore/platform/graphics/android/TiledPage.h
@@ -52,6 +52,7 @@ typedef HashMap<TileKey, BaseTile*> TileMap;
 class TiledPage {
 public:
     TiledPage(int id, GLWebViewState* state);
+    ~TiledPage();
 
     // returns the other TiledPage who shares the same GLWebViewState
     TiledPage* sibling();