[Offline pages] Adding capability to free up space used by Offline pages

chrome/browser/android/offline_pages/offline_page_bridge.cc

Index: chrome/browser/android/offline_pages/offline_page_bridge.cc
diff --git a/chrome/browser/android/offline_pages/offline_page_bridge.cc b/chrome/browser/android/offline_pages/offline_page_bridge.cc
index 27c315f7fc6789bc6f56f77b086a77f8017fec12..83be29d04ebe1e8260a7e86057559f13ed44ddf6 100644
--- a/chrome/browser/android/offline_pages/offline_page_bridge.cc
+++ b/chrome/browser/android/offline_pages/offline_page_bridge.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/android/offline_pages/offline_page_bridge.h"
 
+#include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/files/file_path.h"
 #include "base/strings/string_util.h"
@@ -54,6 +55,19 @@ void DeletePageCallback(ScopedJavaGlobalRef<jobject>* j_callback_obj,
       env, j_callback_ptr->obj(), static_cast<int>(result));
 }
 
+void ToJavaOfflinePageList(JNIEnv* env,
+                           jobject j_result_obj,
+                           const std::vector<OfflinePageItem>& offline_pages) {
+  for (const OfflinePageItem& offline_page : offline_pages) {
+    Java_OfflinePageBridge_createOfflinePageAndAddToList(
+        env, j_result_obj,
+        ConvertUTF8ToJavaString(env, offline_page.url.spec()).obj(),
+        offline_page.bookmark_id,
+        ConvertUTF8ToJavaString(env, offline_page.GetOfflineURL().spec()).obj(),
+        offline_page.file_size);
+  }
+}
+
 }  // namespace
 
 static jboolean IsOfflinePagesEnabled(JNIEnv* env, jclass clazz) {
@@ -88,15 +102,17 @@ void OfflinePageBridge::GetAllPages(JNIEnv* env,
   DCHECK(j_result_obj);
   const std::vector<OfflinePageItem>& offline_pages =
       offline_page_model_->GetAllPages();
+  ToJavaOfflinePageList(env, j_result_obj, offline_pages);
+}
 
-  for (const OfflinePageItem& offline_page : offline_pages) {
-    Java_OfflinePageBridge_createOfflinePageAndAddToList(
-        env, j_result_obj,
-        ConvertUTF8ToJavaString(env, offline_page.url.spec()).obj(),
-        offline_page.bookmark_id,
-        ConvertUTF8ToJavaString(env, offline_page.GetOfflineURL().spec()).obj(),
-        offline_page.file_size);
-  }
+void OfflinePageBridge::GetPagesToCleanUp(JNIEnv* env,
+                                          jobject obj,
+                                          jobject j_result_obj) {
+  DCHECK(offline_page_model_->is_loaded());
+  DCHECK(j_result_obj);
+  const std::vector<OfflinePageItem>& offline_pages =
+      offline_page_model_->GetPagesToCleanUp();
+  ToJavaOfflinePageList(env, j_result_obj, offline_pages);
 }
 
 ScopedJavaLocalRef<jobject> OfflinePageBridge::GetPageByBookmarkId(
@@ -153,6 +169,25 @@ void OfflinePageBridge::DeletePage(JNIEnv* env,
       &DeletePageCallback, j_callback_obj_ptr.release()));
 }
 
+void OfflinePageBridge::DeletePages(JNIEnv* env,
+                                    jobject obj,
+                                    jobject j_callback_obj,
+                                    jlongArray bookmark_ids_array) {
+  DCHECK(j_callback_obj);
+
+  scoped_ptr<ScopedJavaGlobalRef<jobject>> j_callback_obj_ptr(
+      new ScopedJavaGlobalRef<jobject>());
+  j_callback_obj_ptr->Reset(env, j_callback_obj);
+
+  std::vector<jlong> bookmark_ids;
+  base::android::JavaLongArrayToLongVector(env, bookmark_ids_array,
+                                           &bookmark_ids);
+
+  offline_page_model_->DeletePagesByBookmarkId(
+      bookmark_ids,
+      base::Bind(&DeletePageCallback, j_callback_obj_ptr.release()));
+}
+
 void OfflinePageBridge::NotifyIfDoneLoading() const {
   if (!offline_page_model_->is_loaded())
     return;