Support cancellation of non-yet-running jobs in drive::JobScheduler.

chrome/browser/chromeos/drive/job_queue.cc

Index: chrome/browser/chromeos/drive/job_queue.cc
diff --git a/chrome/browser/chromeos/drive/job_queue.cc b/chrome/browser/chromeos/drive/job_queue.cc
index 40a9ed60b8d391e0f3ac50e093ab251969cd3441..499312d0f0c97a8e3b66a1253883402131b52134 100644
--- a/chrome/browser/chromeos/drive/job_queue.cc
+++ b/chrome/browser/chromeos/drive/job_queue.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/chromeos/drive/job_queue.h"
 
+#include <algorithm>
+
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
@@ -64,4 +66,15 @@ size_t JobQueue::GetNumberOfJobs() const {
   return count;
 }
 
+void JobQueue::Remove(JobID id) {
+  for (size_t i = 0; i < queue_.size(); ++i) {
+    std::deque<JobID>::iterator iter =
+        std::find(queue_[i].begin(), queue_[i].end(), id);
+    if (iter != queue_[i].end()) {
+      queue_[i].erase(iter);
+      break;
+    }
+  }
+}
+
 }  // namespace drive