Fix typos.

BUG=None

Change-Id: I897361040b6af091de7f3f8a5b790e08f81d65bd
Reviewed-on: https://chromium-review.googlesource.com/1182719
Commit-Queue: Anand Mistry <amistry@chromium.org>
Reviewed-by: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584671}

chromeos/disks/disk_mount_manager.cc

@@ -334,7 +334,7 @@ class DiskMountManagerImpl : public DiskMountManager,
     const std::string& mount_path = disk.mount_path();
     MountPointMap::const_iterator mount_point = mount_points_.find(mount_path);
     if (mount_point == mount_points_.end()) {
-      // Not in mount_points_. This happens when the mount_points ans disks_ are
+      // Not in mount_points_. This happens when the mount_points and disks_ are
       // inconsistent.
       LOG(ERROR) << "Mount point with path \"" << mount_path << "\" not found.";
       OnMountCompleted(

chromeos/disks/disk_mount_manager_unittest.cc

@@ -68,7 +68,7 @@ struct TestMountPointInfo {
   chromeos::disks::MountCondition mount_condition;
 };
 
-// List of disks held in DiskMountManager at the begining of the test.
+// List of disks held in DiskMountManager at the beginning of the test.
 const TestDiskInfo kTestDisks[] = {
     {
         kDevice1SourcePath,
@@ -126,7 +126,7 @@ const TestDiskInfo kTestDisks[] = {
     },
 };
 
-// List of mount points  held in DiskMountManager at the begining of the test.
+// List of mount points held in DiskMountManager at the beginning of the test.
 const TestMountPointInfo kTestMountPoints[] = {
   {
     "/archive/source_path",
@@ -493,7 +493,7 @@ class DiskMountManagerTest : public testing::Test {
             base::test::ScopedTaskEnvironment::MainThreadType::UI) {}
   ~DiskMountManagerTest() override = default;
 
-  // Sets up test dbus tread manager and disks mount manager.
+  // Sets up test dbus thread manager and disks mount manager.
   // Initializes disk mount manager disks and mount points.
   // Adds a test observer to the disk mount manager.
   void SetUp() override {
@@ -510,7 +510,7 @@ class DiskMountManagerTest : public testing::Test {
     DiskMountManager::GetInstance()->AddObserver(observer_.get());
   }
 
-  // Shuts down dbus thread manager and disk moutn manager used in the test.
+  // Shuts down dbus thread manager and disk mount manager used in the test.
   void TearDown() override {
     DiskMountManager::GetInstance()->RemoveObserver(observer_.get());
     DiskMountManager::Shutdown();
@@ -518,7 +518,7 @@ class DiskMountManagerTest : public testing::Test {
   }
 
  protected:
-  // Checks if disk mount manager contains a mount point with specified moutn
+  // Checks if disk mount manager contains a mount point with specified mount
   // path.
   bool HasMountPoint(const std::string& mount_path) {
     const DiskMountManager::MountPointMap& mount_points =